./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ......................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:58:10,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:58:10,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:58:10,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:58:10,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:58:10,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:58:10,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:58:10,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:58:10,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:58:10,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:58:10,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:58:10,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:58:10,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:58:10,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:58:10,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:58:10,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:58:10,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:58:10,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:58:10,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:58:10,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:58:10,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:58:10,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:58:10,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:58:10,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:58:10,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:58:10,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:58:10,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:58:10,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:58:10,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:58:10,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:58:10,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:58:10,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:58:10,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:58:10,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:58:10,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:58:10,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:58:10,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:58:10,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:58:10,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:58:10,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:58:10,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:58:10,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:58:10,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:58:10,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:58:10,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:58:10,641 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:58:10,642 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:58:10,642 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:58:10,642 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:58:10,642 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:58:10,643 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:58:10,643 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:58:10,644 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:58:10,644 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:58:10,645 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:58:10,645 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:58:10,645 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:58:10,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:58:10,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:58:10,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:58:10,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:58:10,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:58:10,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:58:10,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:58:10,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:58:10,648 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:58:10,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:58:10,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:58:10,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:58:10,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:58:10,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:58:10,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:58:10,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:58:10,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:10,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:58:10,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:58:10,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:58:10,651 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:58:10,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:58:10,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:58:10,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:58:10,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:58:10,652 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-11-22 12:58:10,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:58:10,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:58:10,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:58:10,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:58:10,959 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:58:10,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-22 12:58:11,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/data/832b247c5/df6059510caf446cb1edf8cd4946c74b/FLAGe871b4746 [2020-11-22 12:58:11,532 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:58:11,532 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-22 12:58:11,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/data/832b247c5/df6059510caf446cb1edf8cd4946c74b/FLAGe871b4746 [2020-11-22 12:58:11,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/data/832b247c5/df6059510caf446cb1edf8cd4946c74b [2020-11-22 12:58:11,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:58:11,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:58:11,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:11,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:58:11,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:58:11,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:11" (1/1) ... [2020-11-22 12:58:11,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a5cf57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:11, skipping insertion in model container [2020-11-22 12:58:11,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:11" (1/1) ... [2020-11-22 12:58:11,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:58:11,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:58:12,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:12,158 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:58:12,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:12,208 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:58:12,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12 WrapperNode [2020-11-22 12:58:12,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:12,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:12,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:58:12,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:58:12,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (1/1) ... [2020-11-22 12:58:12,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (1/1) ... [2020-11-22 12:58:12,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:12,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:58:12,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:58:12,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:58:12,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (1/1) ... [2020-11-22 12:58:12,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (1/1) ... [2020-11-22 12:58:12,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (1/1) ... [2020-11-22 12:58:12,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (1/1) ... [2020-11-22 12:58:12,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (1/1) ... [2020-11-22 12:58:12,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (1/1) ... [2020-11-22 12:58:12,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (1/1) ... [2020-11-22 12:58:12,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:58:12,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:58:12,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:58:12,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:58:12,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:58:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:58:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-22 12:58:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:58:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 12:58:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:58:12,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:58:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:58:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:58:12,931 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:58:12,932 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-22 12:58:12,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:12 BoogieIcfgContainer [2020-11-22 12:58:12,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:58:12,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:58:12,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:58:12,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:58:12,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:58:11" (1/3) ... [2020-11-22 12:58:12,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79900e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:12, skipping insertion in model container [2020-11-22 12:58:12,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:12" (2/3) ... [2020-11-22 12:58:12,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79900e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:12, skipping insertion in model container [2020-11-22 12:58:12,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:12" (3/3) ... [2020-11-22 12:58:12,943 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-11-22 12:58:12,955 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:58:12,959 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:58:12,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:58:13,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:58:13,014 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:58:13,014 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:58:13,015 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:58:13,015 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:58:13,015 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:58:13,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:58:13,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:58:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-22 12:58:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:58:13,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:13,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:13,036 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:13,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:13,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1971406064, now seen corresponding path program 1 times [2020-11-22 12:58:13,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:13,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165503923] [2020-11-22 12:58:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:13,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165503923] [2020-11-22 12:58:13,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:13,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:58:13,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438243293] [2020-11-22 12:58:13,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:58:13,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:13,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:58:13,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:58:13,216 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-11-22 12:58:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:13,231 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2020-11-22 12:58:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:58:13,232 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-22 12:58:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:13,240 INFO L225 Difference]: With dead ends: 47 [2020-11-22 12:58:13,241 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 12:58:13,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:58:13,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 12:58:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-22 12:58:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-22 12:58:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-22 12:58:13,279 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2020-11-22 12:58:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:13,279 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-22 12:58:13,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:58:13,280 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-22 12:58:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:58:13,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:13,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:13,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:58:13,281 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:13,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1803644696, now seen corresponding path program 1 times [2020-11-22 12:58:13,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:13,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317774809] [2020-11-22 12:58:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:58:13,463 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:58:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:58:13,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:58:13,654 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:58:13,654 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:58:13,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:58:13,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:58:13 BoogieIcfgContainer [2020-11-22 12:58:13,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:58:13,702 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:58:13,702 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:58:13,703 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:58:13,703 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:12" (3/4) ... [2020-11-22 12:58:13,707 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 12:58:13,707 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:58:13,712 INFO L168 Benchmark]: Toolchain (without parser) took 1800.07 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 53.7 MB in the beginning and 53.5 MB in the end (delta: 215.3 kB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:13,712 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:13,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.53 ms. Allocated memory is still 83.9 MB. Free memory was 53.6 MB in the beginning and 60.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:13,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.22 ms. Allocated memory is still 83.9 MB. Free memory was 60.4 MB in the beginning and 58.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:13,716 INFO L168 Benchmark]: Boogie Preprocessor took 44.58 ms. Allocated memory is still 83.9 MB. Free memory was 58.4 MB in the beginning and 56.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:13,717 INFO L168 Benchmark]: RCFGBuilder took 616.24 ms. Allocated memory is still 83.9 MB. Free memory was 56.8 MB in the beginning and 32.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:13,718 INFO L168 Benchmark]: TraceAbstraction took 765.30 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 32.1 MB in the beginning and 53.5 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:13,718 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 100.7 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:13,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.53 ms. Allocated memory is still 83.9 MB. Free memory was 53.6 MB in the beginning and 60.4 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.22 ms. Allocated memory is still 83.9 MB. Free memory was 60.4 MB in the beginning and 58.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.58 ms. Allocated memory is still 83.9 MB. Free memory was 58.4 MB in the beginning and 56.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 616.24 ms. Allocated memory is still 83.9 MB. Free memory was 56.8 MB in the beginning and 32.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 765.30 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 32.1 MB in the beginning and 53.5 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.79 ms. Allocated memory is still 100.7 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:58:16,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:58:16,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:58:16,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:58:16,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:58:16,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:58:16,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:58:16,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:58:16,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:58:16,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:58:16,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:58:16,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:58:16,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:58:16,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:58:16,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:58:16,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:58:16,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:58:16,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:58:16,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:58:16,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:58:16,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:58:16,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:58:16,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:58:16,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:58:16,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:58:16,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:58:16,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:58:16,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:58:16,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:58:16,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:58:16,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:58:16,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:58:16,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:58:16,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:58:16,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:58:16,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:58:16,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:58:16,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:58:16,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:58:16,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:58:16,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:58:16,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:58:16,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:58:16,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:58:16,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:58:16,567 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:58:16,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:58:16,568 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:58:16,568 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:58:16,569 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:58:16,569 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:58:16,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:58:16,572 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:58:16,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:58:16,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:58:16,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:58:16,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:58:16,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:58:16,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:58:16,574 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:58:16,574 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:58:16,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:58:16,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:58:16,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:58:16,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:58:16,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:58:16,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:58:16,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:58:16,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:58:16,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:16,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:58:16,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:58:16,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:58:16,577 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:58:16,577 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:58:16,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:58:16,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:58:16,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:58:16,579 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-11-22 12:58:16,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:58:16,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:58:16,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:58:16,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:58:16,995 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:58:16,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-22 12:58:17,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/data/f180fe071/84294ca5ac064a73bfce93d5e1b51f02/FLAG26e732d60 [2020-11-22 12:58:17,670 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:58:17,674 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-22 12:58:17,681 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/data/f180fe071/84294ca5ac064a73bfce93d5e1b51f02/FLAG26e732d60 [2020-11-22 12:58:18,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/data/f180fe071/84294ca5ac064a73bfce93d5e1b51f02 [2020-11-22 12:58:18,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:58:18,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:58:18,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:18,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:58:18,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:58:18,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c47bec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18, skipping insertion in model container [2020-11-22 12:58:18,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:58:18,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:58:18,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:18,241 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:58:18,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:18,293 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:58:18,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18 WrapperNode [2020-11-22 12:58:18,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:18,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:18,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:58:18,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:58:18,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:18,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:58:18,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:58:18,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:58:18,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (1/1) ... [2020-11-22 12:58:18,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:58:18,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:58:18,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:58:18,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:58:18,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-22 12:58:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-22 12:58:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:58:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:58:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 12:58:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:58:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:58:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 12:58:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:58:19,256 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:58:19,257 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-22 12:58:19,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:19 BoogieIcfgContainer [2020-11-22 12:58:19,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:58:19,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:58:19,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:58:19,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:58:19,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:58:18" (1/3) ... [2020-11-22 12:58:19,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e258278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:19, skipping insertion in model container [2020-11-22 12:58:19,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:18" (2/3) ... [2020-11-22 12:58:19,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e258278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:19, skipping insertion in model container [2020-11-22 12:58:19,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:19" (3/3) ... [2020-11-22 12:58:19,268 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-11-22 12:58:19,279 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:58:19,285 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:58:19,298 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:58:19,323 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:58:19,323 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:58:19,323 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:58:19,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:58:19,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:58:19,324 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:58:19,324 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:58:19,324 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:58:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-22 12:58:19,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 12:58:19,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:19,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:19,344 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:19,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:19,350 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-11-22 12:58:19,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:58:19,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401103763] [2020-11-22 12:58:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 12:58:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:19,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:58:19,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:58:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:19,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:58:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:19,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401103763] [2020-11-22 12:58:19,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:19,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:58:19,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353362603] [2020-11-22 12:58:19,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:58:19,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:58:19,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:58:19,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:58:19,662 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-22 12:58:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:19,694 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-11-22 12:58:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:58:19,696 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-22 12:58:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:19,705 INFO L225 Difference]: With dead ends: 53 [2020-11-22 12:58:19,705 INFO L226 Difference]: Without dead ends: 24 [2020-11-22 12:58:19,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:58:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-22 12:58:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-22 12:58:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-22 12:58:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-22 12:58:19,747 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-11-22 12:58:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:19,747 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-22 12:58:19,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:58:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-22 12:58:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 12:58:19,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:19,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:19,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:58:19,970 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:19,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:19,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-11-22 12:58:19,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:58:19,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15695613] [2020-11-22 12:58:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 12:58:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:58:20,268 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:58:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:58:20,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:58:20,586 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:58:20,586 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:58:20,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:58:20,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:58:20 BoogieIcfgContainer [2020-11-22 12:58:20,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:58:20,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:58:20,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:58:20,825 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:58:20,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:19" (3/4) ... [2020-11-22 12:58:20,828 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:58:20,925 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_220b289d-3d69-46f0-8bc4-61db9c542f6f/bin/utaipan/witness.graphml [2020-11-22 12:58:20,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:58:20,928 INFO L168 Benchmark]: Toolchain (without parser) took 2911.76 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.7 MB in the beginning and 36.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:20,929 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 50.3 MB. Free memory was 32.7 MB in the beginning and 32.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:20,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.99 ms. Allocated memory is still 50.3 MB. Free memory was 27.5 MB in the beginning and 27.8 MB in the end (delta: -269.6 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:20,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.84 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.6 MB in the beginning and 46.6 MB in the end (delta: -19.0 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:20,943 INFO L168 Benchmark]: Boogie Preprocessor took 66.57 ms. Allocated memory is still 62.9 MB. Free memory was 46.6 MB in the beginning and 44.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:20,943 INFO L168 Benchmark]: RCFGBuilder took 791.72 ms. Allocated memory is still 62.9 MB. Free memory was 44.7 MB in the beginning and 40.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:20,944 INFO L168 Benchmark]: TraceAbstraction took 1563.50 ms. Allocated memory is still 62.9 MB. Free memory was 40.5 MB in the beginning and 38.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:20,945 INFO L168 Benchmark]: Witness Printer took 100.94 ms. Allocated memory is still 62.9 MB. Free memory was 38.5 MB in the beginning and 36.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:20,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 50.3 MB. Free memory was 32.7 MB in the beginning and 32.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.99 ms. Allocated memory is still 50.3 MB. Free memory was 27.5 MB in the beginning and 27.8 MB in the end (delta: -269.6 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.84 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.6 MB in the beginning and 46.6 MB in the end (delta: -19.0 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.57 ms. Allocated memory is still 62.9 MB. Free memory was 46.6 MB in the beginning and 44.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 791.72 ms. Allocated memory is still 62.9 MB. Free memory was 44.7 MB in the beginning and 40.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1563.50 ms. Allocated memory is still 62.9 MB. Free memory was 40.5 MB in the beginning and 38.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Witness Printer took 100.94 ms. Allocated memory is still 62.9 MB. Free memory was 38.5 MB in the beginning and 36.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...